Head-seaming mechanism for can-bodies.



L. o. KRUMMBL. HEAD SEAMING MBGHA'NISM PQR CAN BODIES.

APILIOA'IIION FILED NOV. l2, 1908. 934,921 Patented SeptfZl, 1909.

a SHEETS-SEEE; 1.

IMM.,

"Zi j@ L. C. KRUMMEL; HEAD SBAMING MEGHNISM EORUAN BODIES.

APPLICATION FILED NOV. 12, 190B.

' Patented Sept. 21, 1909.

3 SHEETS-SHEET 2.

Suma/toa null LOUIS C. KRUMMEL, OF

CLINTON, CONNECTICUT. y

HEAD-SEAMING MECHANISM FOR CAN-BODIES.

Specification of Letters Patent. lPatented Sept. 21, 1909.

Application filed November 12, 1908. Seriall No. 462,229.

' linton, in the county of Middlesex, State of Connecticut, haveinvented certain new and useful Improvements i'nHead-Seaming the centerrod. Fig'. 7 is a side viewof the 't-heseaming head= is a similarvie'wwith the head- 1n positionr l'lechanism's `for Can-Bodies, of which thefollowing isa description, `reference being had to the accompanyingdrawing, and to the letters and figures of reference marked thereon. g

The invent-ion relates-to new and useful improvements 'in head seamingmechanisms for cans and other receptaclesof the type wherein a sanitarycan may be produced; v. c., a can having its top secured to the can bodysolely by crimping and seeming, commonly known as a double seemed can.VIn the present machines of this type, the candnring the closingvoperation,` is either revolved, lifted or otherwise moved. The movementof the filled can often causes a spilling` of thecontents, which sooncauses an unclean and unsanitary condition of the apparat-us andA isobjectionable in many Ways.

The primary object of the invention is toprovide a seaming head that.will permit of seeming the cover on to the body of a filled can withouteither revolving or lifting thevcan, or moving. the same in 'any way.l-t is obvious, however, that theA invention in its'broader aspects. iscapable of -other uses.l It also obvious that-'certain features of theinvention, as lwill hereinafter be pointed out, are well' capable of usein machines wherein the can is rotated relative tol the'v seaming rolls'czr-rI-'ier during "the closing operation. l

The invention consists in the parts, improvements and arrangements ihereinafter shown, described and pointed .out in the appended claims. i

ln the drawings which show by f'wayrof illustration one embodiment ofthe invennom-Figure 1- is a side View 'bfgavcan seaminginachlne'havingmy improved vseainin'gA head' thereon; F10'. 2 1s a sectional View ofwhen expanded-glj`1g. 3

to finish flattening theseam; Fig. 4c is a side View of theseaining-head, showing the means for limiting the movement of one sleeverelative to the' other; and Fig. is a. sectional view on the linev 5-.5,of Fig. 2` Fig. (i a side view-of the cam for operating Qsockets at thelow-erfendv of the pocketsfgmc cam for operating the shaft" whichsupports the seeming head.

In carrying. out my invention, I have herein shown a standard 11, 'onwhich is mounted and operated my improved closing head. Said. standardis providedv with a laterally projecting table 2, which is stationary,and which has `a smooth'. unbroken surface on which the cans rest duringthe closingoperation. Y

By providing a table of the above character, there are nopockets inwhich the content-s spil-led from thel filled cans may lodge, and,therefore, the table may be quickly and readily cleaned by wiping oli'the smooth unbroken surface of the same. i

The standard 1 is provided with laterally y projecting bearing lugs 2,3, in which is mounted a hollow sh'aft Il, carrying at its lowerend myimproved lseeming head. Said A seaming head comprises an inner sleeve 5,Which'is threaded on to t-he end of the hollow shaft 1, as clearly shownin lFigs. 2 and Said inner sleeve 5 is provided withl an outwardlyextending flange 6, and with a downwardly extending cylindrical: portion7. The head also comprises an outer sleeve 8, whichy is provided with acentralrecess 9, sot-hat said outer sleeve fits over thedependingcylindrical portion 7 of the inner sleeve.

The outer sleeve, as shown in Fig. '5,l is also provided with segmentalpockets or recesses 1,6, 10. Located with-in the pockets 10,- are,v asherein shown, two bolts l1 'and l2. Said bolts 11 and 12 extend upthroughA 5.A The `bolts 1l and 12 are threaded'flto areprovided at theirupper` ends with heads 13,14. The purpose of the'bolts 1l 'and 12:'

is to limit the movement ofthe outer sleeve away -from the inner sleeve.Buffers 15 .and 1=6surround the bolts 13 vand lit, and are locatedl insuitable recesses in the upper face of the inner sleeve.

If my' improved seaining head be located tically, the outer sleeve'fniaybe moved away` from the inner. sleeve by the force of grave ity alone;norder, however, to insure thc expanding ii'my scaming head withcertainty, I-`preferably provide' springs 17 and v18 (see Fig. 4f.)which are coiled about the bolt-s 111 and 12,-,and rest at one` end onthe.

las shownin Fig. 1, sofas to operate .ver-

l l. (l

bottomf walls of the pockets 10, and at their other endssaid springsbear against the sleeve.

While I have shown herein two bolts serving to limit the movement of theouter sleeve relative to the inner sleeve, it is ob` vious that anynumber of bolts may be used, or other limiting means may likewise beused, if desired. 'The outer sleeve 8 carries the pivot bolt.

the levers which support the seaming rolls. 'llie lever 19 is mounted ina vertical recess in the outer sleeve on a pivot bolt' 20. 'I he sleeveis cut awayhorizontally at 21 (see Fig. 4), in order to allow theinsertion of The lever 22 is. mounted in a similar ie'cessin the outerringvon a pivot bolt 23. The lever 19 carries a curling roll 24, and theleverI 22 (as herein shown), carries 4a flattening roll 25. It will beobvious that instead of providing two levers, one carrying a curlingroll and the other a flattening roll, that any desired num- Y ber ofseaniing rolls may be provided.

The leverl 22 is provided with an outwardly projecting -stud 26, whichengages an eye' in a rod 27, passing through a lug 28 extend ing fromthe side wall of the outer sleeve. A spring 29 surrounds the rod 27, andengages a nut 30 at the upper end of the rod 27.` The stud 26 is solocated relative. to the pivot bolt 23, that the spring 29 serves toturnthe lever 22 and throw the lower vend thereof outward, while theupper end of the lever is thrown inward.L 'A similar spring is providedfor the lever 19, which also holds the seaming roll 24 outward away fromthe can body. The inner sleeve 5 is provided with a cani 31, which issecured loosely to the inner. sleeve by means of a bolt 32. A rubber pad33, or other suitable cushion device is located under cam 31 on theinner sleeve, and engages the rear side of the cam 31.

4 `The lever 22 is provided with a cam plate 34, which is pivoted by apivot bolt 35 in a cut away portion in the inner face of the lever 22. Ascrew 36 serves as aineans for determining the vposition of the camplate 34, relative to the lever 22. The cam surface of the cam plate34,coperates with the inclined face of the cam 31. As the inner sleeve ismoved downward relative to the outer sleeve, the inclined face/of thecam 31 will force the upper end of the llever 22 outward against theaction of the spring 29, and bring the seaining roll 25 into contactwith the can. A cam,.37 is also secured to the inner sleeve by a bolt38, which holds the cam 37 in a recess formed in the outerr face of t-hedepending portion of the inner sleeve.

The lever 19 is provided with a latch cam i 39, which is pivotedto thelever 19 by a pivot ,bolt,40. A springl 4.1 secured at one end tothelatch cam 39 and at its other end i inclined face 44, said cam is cutaway. When the inner sleeve is moved downward relative to the outersleeve, the inclined face 44 will engage the camv latch 3,9, and crowdthe upper end of the. leverv 19 outward and 'against the actionof itsspring, and thus force the seeming roll carriedthereby 'into contactwith the can. As soon, however, as the nose of the latch cam 39 reaches'the cut away portion of the cam 37, the spring 2,9 will move'tli'elever19 so as to move the seaniing roll out of contact Wit-h the can top.

When the seaming head is expanded, and the outer sleeve moved away fromthe inner sleeve, the cam latch 39 will turn about its pivot, so thatsaid latch inay pass the shoulder on the cam 37.

Coperating with the seaiiiing .rolls is av .chuck 45, which, as hereinshown, is threaded on to a chuck shank 46, extending up through acentral opening in the outer sleeve 8. The chuck shank 46 is .providedwith a bearing head or flange 47 at its upper end. Ball bearings 48 areinterposed betweenthe chuck and the outer sleeve, so that the outersleeve may rotate freely u on the chuck shank and chuck. The chuchowever, will be moved toward and from the inner sleeve with the outersleeve. Centrally of the chuck is a center pad 49, which is so shaped asto fit within a' recess iir the lower face of the .chuck 45. The centerpad 49 is rigidly secured to a center rod 50 4which extends up throughthe hollow chuc shank and up through a central opening in the innersleeve 5, and through the hollow shaft 4,

which supports the seaming head. 'llie chuck shank is vconnected to thecenter rod 50, by means of a groove and spline connec' tion 51. Thisspline connection between the" chuck and limits the downward movementvthereof, as will be hereinafter more fully described.

It will be noted that the center rod is not only supported by the innersleeve, but through the chuck shank it is also supported by the outersleeve, and I have by this con# struction provided a .head which is verysteady in operation.y

The center rod 50, near its upper end is threaded into a sleeve 53,which is pivoted between the outer forked ends of a lever 53, carried'by a bearing 5,4in the. standard of the machine. The otherA end ofthelever 53 carries a roll 55 rnnningin a. cam groove 86 "in the face ofa rotating cain57a. Saidl rotating cam is carried by a short shaft 56'opei'ated by the Worm gear 57, which gearsV with a worm on a shaft 58which in turn is driven Iby the main shaft 59.-

The' hollow shaft 4 which supports the` ciprocate the hollow shaft 4carrying 4the sea'ming head. The seaming head is rot-ated by means of agear 66, which is splined on to the hollow shaft 4 and coperates with agear 67 carried by the end of the shaft 58.

'The cams carried by the shaft 56 are so constructed, that in theoperation of my dcvice, the center pad 46 is first Vmoved down on to thecover of the can which is to be closed. This downward movement of thecenter pad may be adjusted by turning the hand wheel 68 at the upper endof the center rod. lSaid center rod is threaded ,intoV vthe' sleeve andby rotating the hand wheel 68tlic center rod may be moved upand down insaid sleeve. lVhen the parts are properly adjusted, the center pad willcome down onto thel can, so as to hold the same lightly but firmly, onthe supporting :tablel 2. After the center pad engages the top of thecan., the lever 63 is 'then operated so as to lower the seaming head..This movement ofthe center pad down oii'to the cover inadvance of theseaming head serves to properly place or seat the cover on the can body,whereby a perfect joint may be made. The inner and ou'ter sleevestirstmove down together until the chuck engages the slioulderx52 on thecenter pad, at which time lthe lower face of 4the chuck is substantially-iiush with the lower face of thecentei" pad,

and fthe chuck properly positioned on the cover orI top of thel can.Further downward movement: of the vouter sleeve is thus prel` vented bythe center pad, and athef'inner sleeve continues its downward movement,

coni'iressinffv the s rinffs 17 and 18, located l n p a:

between lthe inner and outer sleeves. The caml 3 7' first contactswith,y the/ am 'latch 39 so as to swingJ the lever/ 19 n d move thecurling roll '24 into engagement Iwith tire headsof the can top and theyedge of the-can It shouldbe'borne in' mind that the 'seaming head isrotated continuously-bythe bev-" eled gears 67, 66. The centetrot,"however,

is stationary, and inasmiicli as the chuckis" splined thereto, it. alsois stationary. Asl

soon as the -iiiner sleeve hasdescended sufficient-ly to complete thecurling of the edges of the can top and can body, the cam latch passesinto the cut away portion in the cam 37,'-and the spring at once swingsthe lever- 19 so as to bringfthe curling roll out of engagement with theedge of the can. The cam 31` meanwhile has been swinging the lever 22vso that the fiattening roll carried thereby is brought into contactwith the curled edges of the can, and the seam fiattened and finished.The downward in'ovement of the inner sleeve is just sufficient, so as toproperly finish the closing 'seam when the lever 63 is swung in theopposite direction and fthe sea-ming head raised.

During'the first part of the upward movi mentof the seeming head, theinner sleeve moves out of the kouter sleeve, and the chuck remains incontact with the top of the can. The seeming rolls are moved 'out ofcontact .with the edge of the can by the springs which 'control thesame. lVlien, however, 'the' outward extending flange 6 of the innersleeve 5 engages the heads of the bolts 13 and 14, the movementof theinner sleeve relative to the outer sleeve ceases, and the outer sleevevis then moved with the inner sleeve. rl`his movement of the outer sleeveliftsl the Achuck ofi' from the top of the can. The'lever for operatingthe center pad lis so vcontrolled. by its cain that the center pad stillrmainsin contactl with the cover or 4top ofthe can-until after the chuckis raised to'a positiony shown in Fig. 2. The center pa'd will,therefore, operate to strip the can from the chuck, should the closingof the seam bind the can top on the chuckf l During 'the entireoperation of closing the seam, the can is stationary, for theK reasonthat the center pad which has no rotating movement, iisii'st moved downonto the can cover, properly centering, seating and holding the cover,and then the chuck which also has no rotating movement,` is moved downon tothe can top. The friction be- `tween the edfreof the can top andthe chuck,

due to the closingof the seam, is a sliding friction. That is to say, ifthere is any r'movement between the can and the chuck,

the can must Slide on the chuck. The friction -dueto the rotating parts,(i. c., his closing rolls), is a rolling friction, and it is well knownthat a sliding friction is very "much greater than a rolling friction,and,

therefore, the can will be held stationary by the stationary center padand chuck,

' while theseaming head Vrotates about the can.

I have/found in practice, that it is not necessary/io make the chuck fitwith great.

accuracy into the top ofthe cover, but 'that there may be consider: leclearance between, the chuck and them. r face of thc can top,/r

and still the sliding friction between the can and the chuck willprevent the rot-ation of the can relative to the chuck. rlhis is ofconsiderable importance, for the reason that it' it were necessary ltohave the chuck of eX- actly the same size as theinner face of the cover,the chuck would soon wear so as to be too small to properly operateitohold the can. lVhile I have described my invention a particularlyadapted for 'closing a can which is absolutely stationary during theclosing operation, it \vill readily be seen that the connection hereinshown between the center rod and the shank of the chuck, so that lthechuck and the centerA rod have n'o rotating movement relative to eachother, would be of great value in lthat type'ot' machine where the canrotates, and the seaming rolls are stationary, as the rotating chuck andcenter pad would rotate the can with little or no slipping, and afterthe can is closed the center' pad would readily operate to-strip the canfrom the chuck. So far as these features of the invention are concerned,I do not, therefore, desire-to be limited tothe use of my invention, forthe purpose of closing a can without -giving tothe can any movement.

By my improved device, wherein the chuck and center pad are stationaryand-move down one after the other onto the can, I have found that it isnot necessary to clamp vthe can in any way on the table. Suitable guidesmay, if desired, be placed on the,

table, in order to locate the can centrally under the seaming head.Instead of placing the can byhand under the seaming head, automaticmeans may be devised for feeding the cans one after another under theseaming head. The particular way of placing the can under the seaming-head is no part'ot` the present invention, and it should be distinctlyunderstood that my improved seaming head may be used in connection withany desired feeding mechanism, or the cansl may be fed thereto by hand,it' desired. By adjusting the screw 3G, it will be obvious that thepressureof the fiattening roll on the seam may be varied. The'cushion33' serves to .relieve the strain on the flattening roll when passingover side seams or the like.

It will be obvious that minor changes in the details of construction maybe made without in' any way departing from the spirit o'f-my invention,or sacrificing its principles.

Having thus described my invention, what I claim as new and desi-re tosecure by Letters Patent, is

l. A seaming head including in combination, a rotaryzspindle, aninnersleeve carried thereby, an outer sleeve located beneath said innersleeve, and havinga' recess adapt-` ed to' receive said inner sleeve,seaming rolls v .carriedkby saidouter, sleeve, a ehuckcarried by saidouter sleeve, and meansfor holding said chuck from rotating with saidouter sleeve. e

2.' A seaming heady including in combination, a rot-ary spindle, aninner sleeve carried thereby, an outer sleeve arranged below said innersleeve and having a recess adapted to receive said inner sleeve, seamingrolls carried by said outer sleeve, a chuck, a chuck stem carryin said.chuck, said chuck stem being journa ed in saidgouter sleeve and.

means for preventing said chuck from rotating with said outer sleeve.

3. A seaming head including in combination, a rotary spindle, an innersleeve carried thereby, an outer sleeve arranged below said inner sleeveand having a recess adapted to receive said inner sleeve, a chuck, achuck stem carrying said chuck, said chuck stem being journaled in saidouter sleeve,` ball bearings between said chuck and said outer sleeve,means for holding said chuck from moving longitudinally relative to saidouter sleeve, and means for holding said chuck from rotating with saidouter sleeve.

LA seaming head including` in combination, a rotary spindle, an innersleeve carried by said rotary spindle, an .outer sleeve mounted `belowsaid inner sleeve and having a recess adaptedto receive said innersleeve,

said outer sleeve having radial recesses formed therein, levers pivotedin said radial recesses in the` outer'sleeve, seaming rolls carried bysaid levers and means for swing- Cing said leversn about their pivots,whereby the seaming rolls are operated.

5. A 'seaminghead including in combination a rotary spindle, an innersleeve carried thereby, an outer sleeve mounted below Asaid inner sleeveandL having a recess adapted lto receive said inner sleeve, said outersleeve having radial recesses formed therein, levers pivoted in saidradial recesses, 'seaming rolls carried by said levers, and cams carriedby said inner sleeve and cooperating with said levers. p

6; A seaming head including iii combina.- .tion`, a rotary spindle, aninner sleeve. carried by said rotary spindle, an outer sleeve mountedbeneatlusaid inner sleeve, and havl i ,sleeveyacenter rod extendingthrough said bolts tor limiting the movement of said outer sleeve,seaniing rolls carried by' said outer sleeve, a chuck, means wherebysaid chuck is journaled in said outer sleeve, and means tor holding saidchuck from lrotating with said outer sleeve. v

SMA seaining head including in combination, a rotary spindle, an4 innersleeve threaded to said rotary spindle, an outer sleeve mounted beneathsaid inner sleeve and having a recess adapted toreceive said inner theflattening roll.

slee-ve, Asaid outer sleeve having radial recesses, levers pivotallysupported in said recesses; in the outer sleeve, .seaming rolls carriedby said levers, cams carried by said inner sleeve and cooperating withsaid levers, a center rod, means for holding said center rod fromrotating with the seaming head, al chuck, a spline for connecting saidchuck to said center' rod whereby the same may move longitudinally onsaid center rod, and means whereby said chuck is journaled in said outersleeve. ,v

il). A can seaininghead including in combination, a plurality of seamingrolls, opel'- ating levers therefor pivoted to saidhead, a

vcam slide for actuating said operating levers,

cams carried by said slide and engaging said levers, a cushion foryieldingly supporting the operative end, of the cam-which operates 11. Acan seaniing head including in'com` bination, a seaining roll, a'pivoted lever carrying said seaming roll, 'a cam slide for actuatingsaid lever, a cam carried by said slide, a cam plate carried by saidcani slide, and means-for adjusting the position of said .cam plate.

12. A can seaming head including in com` bination, a seaming roll, apivoted lever carrying' said-seaming roll, a cam for operating` saidpivoted lever, means for supporting and movingA said cam relative'tosaid lever, a rod connected to said lever, a perforated lug carried by,said head through which said rod extends, a spring surrounding said rodand operating to hold thel pivoted lever in contact with its operatingcam.

13. A can seaming head including in com` bination, a seaming roll, apivoted lever carrying said seaming roll, apivotedlatch cam carried bysaid levr, a spring normally holding said latch cani on its seal in thelever, a cani slide, a cani carried thereby and coperating with saidlatch cam, and a spring for holding said pivoted lever in contact withits operating cam.

l. A can se'aiiiing head including in coinbination, an outer sleevehaving` a central re.- cess, an inner sleeve fitting said centralrecess, and having an outwardly extending flange, pivoted levers carriedby said outer sleeve, seaniing rolls mounted on said levers, camscarried by said inner sleeve and operating said levers, springsinterposed betweenv said outersleeve and said inner sleeve, and meansengaging said flange forA limit-ing thc movement of lthe outer sleeverelative to the inner sleeve.

15. A can seaining head including in coinbination, an outer sleevehaving a central recess, an inner sleeve fitting said central recess,and having an outwardly extending fiange, pivoted levers carried nysaidouter sleeve, seaming rolls mounted on said levers, cams carried by saidinner sleeve and oper` ating Said levers, spr1ngs interposed between.said outer sleeve and said inner sleeve, and l bolts carried by saidouter sleeve and extending through openings in the flange of the innersleeve, the heads of said lbolts opel-at` ing to limit the movement' ofthe outer sleeve relative to the ,inner sleeve.

16. A can seaming head including in conibination, an outer sleeve,seeming rolls car-l iied thereby, a chuck, means for connecting saidIchuck to said outer sleeve, wherebysaid outer sleeve inayzrotate freelyIrelative to said chuck, a center pad located centrally otsaid chuck, acenter rod connected to said center padvand extending upwardly throughisaid clnick and outer sleeve, means for hold- 'ing said center rod `fromrotatingwith said outer sleeve, and means for connecting said center rodto saidchuck, whereby said chuck is held from rotating relative to saidcenter rod andsaid chuck is free to move longitu` dinally'on said centerrod.

f 17. he combination with a stationary table on which the can is`adapted to restduring the entire seaming" operation, of a seaming head,mea-ns 'for reciprocating said seaming head, said seaming headincludingseaming rolls, pivoted leversicarrying said seaming rolls, acam slide, cams carried thereby and operating said 4pivoted levers, achuck, means for' connecting said chuck to said seaming head, whereby itis reci procated therewith, and whereby said seaming head may rotatefreely relative to said chuck, and means for positively holding saidchuck from rotation.

18. The combination with a stationary table on which the can is adaptedto rest. during the entire seeming operation` of a seeming head, meansfor reciprocating said sea-ming head, said seaming headincluding seamingrolls, pivoted levers carrying said seeming rolls, :roam slide, camscarried thereby and operating said pivoted levers, a chuck, means forconnecting said.s chuck to 5 said seaming headJ whereby it isreciprooated therewith, and whereby )said seeming `head may rotatefreely relative to said chuck, a Y

center pad, a center rod connected to said center pad, and a spline forconnectlng sind chuck to said center rod, whereby said chuck l0 is heldfromrotating relative to the center rod. l

In testimony whereof I allx my signature, in presenceL of two witnesses.

LOUIS C. KRUMMEL. Witnesses WM. G. BIssELL, EZRA VE. POST.

